CN113347750B - Control method for heating unit, heating unit and refrigerating and freezing device - Google Patents
Control method for heating unit, heating unit and refrigerating and freezing device Download PDFInfo
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- CN113347750B CN113347750B CN202010099918.1A CN202010099918A CN113347750B CN 113347750 B CN113347750 B CN 113347750B CN 202010099918 A CN202010099918 A CN 202010099918A CN 113347750 B CN113347750 B CN 113347750B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007710 freezing Methods 0.000 title claims abstract description 19
- 230000008014 freezing Effects 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 230000005855 radiation Effects 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 8
- 230000000875 corresponding effect Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 20
- 235000013305 food Nutrition 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a control method for a heating unit, the heating unit and a refrigerating and freezing device. The control method comprises the following steps: acquiring a forward power signal output by an electromagnetic wave generating module and a reverse power signal returned to the electromagnetic wave generating module; calculating the electromagnetic wave absorptivity of the object to be processed according to the forward power signal and the reverse power signal; the rotation speed of the cooling fan is adjusted according to the power value of the forward power signal and the electromagnetic wave absorptivity. Compared with the rotation speed of the heat radiation fan which is adjusted according to the temperature of the electromagnetic wave generating module, the rotation speed of the heat radiation fan which is used for radiating the electromagnetic wave generating module is adjusted according to the power value of the forward power signal output by the electromagnetic wave generating module and the electromagnetic wave absorptivity of the object to be treated, the heat generated by the electromagnetic wave generating module can be reflected more accurately without arranging an additional temperature sensing device, the full heat radiation of the electromagnetic wave generating module is realized, meanwhile, the unexpected energy waste and noise pollution are avoided, and the user experience is improved.
Description
Technical Field
The invention relates to the field of food processing, in particular to a control method for a heating unit, the heating unit and a refrigerating and freezing device.
Background
The quality of the food is maintained during freezing, however, the frozen food needs to be heated before processing or eating. In order to facilitate the user's freezing and heating of food, the related art generally thaws food by providing an electromagnetic wave heating unit in a refrigerating and freezing apparatus such as a refrigerator.
However, the electromagnetic wave generating system of the heating unit can generate more heat in the working process, so that the temperature fluctuation of the storage chamber is caused, the preservation quality of food in the storage chamber is affected, the working efficiency of the electromagnetic wave generating system is reduced, and the service life of an electric device is seriously reduced if the electromagnetic wave generating system is in a high-temperature state for a long time.
Disclosure of Invention
It is an object of a first aspect of the present invention to overcome at least one technical disadvantage of the prior art and to provide a control method for an electromagnetic wave heating unit.
A further object of the first aspect of the invention is to reduce energy consumption.
An object of the second aspect of the invention is to provide a heating unit.
An object of the third aspect of the present invention is to provide a refrigerating and freezing apparatus having the heating unit.
A further object of the third aspect of the present invention is to improve the heat dissipation efficiency of an electromagnetic wave generating system.
According to a first aspect of the present invention, there is provided a control method for a heating unit including a cylinder for placing an object to be treated, and an electromagnetic wave generating system at least a part of which is provided in or to the inside of the cylinder, and the electromagnetic wave generating system including an electromagnetic wave generating module for generating an electromagnetic wave signal and a heat radiating fan for radiating the electromagnetic wave generating module; the control method comprises the following steps:
acquiring a forward power signal output by the electromagnetic wave generation module and a reverse power signal returned to the electromagnetic wave generation module;
calculating the electromagnetic wave absorptivity of the object to be processed according to the forward power signal and the reverse power signal;
and adjusting the rotating speed of the cooling fan according to the power value of the forward power signal and the electromagnetic wave absorptivity.
Optionally, the step of adjusting the rotation speed of the cooling fan according to the power value of the forward power signal and the electromagnetic wave absorptivity includes:
matching the rotating speed of the cooling fan according to the power value of the forward power signal and the electromagnetic wave absorptivity and a preset rotating speed comparison relation; wherein the method comprises the steps of
The rotation speed comparison relation records power values in different ranges and rotation speeds corresponding to electromagnetic wave absorptivity in different ranges; and is also provided with
Under the condition that the power values of the forward power signals are the same, the rotating speed of the cooling fan is inversely related to the average value of the electromagnetic wave absorptivity in different ranges; when the electromagnetic wave absorptivity is the same, the rotation speed of the cooling fan is positively correlated with the average value of power values in different ranges.
Optionally, the electromagnetic wave generating module comprises a frequency source, a power amplifier and a processing unit; the control method further includes:
acquiring the temperature of the processing unit;
and if the temperature of the processing unit is greater than or equal to a preset temperature threshold, controlling the frequency source and the power amplifier to stop working.
Optionally, after the step of controlling the frequency source and the power amplifier to stop operating, the method further comprises:
and controlling the cooling fan to work at the rated rotation speed for a first preset time, and stopping working after the first preset time.
According to a second aspect of the present invention, there is provided a heating unit comprising:
the cylinder is used for placing an object to be treated;
an electromagnetic wave generating system, at least a part of which is arranged in the cylinder or communicated with the cylinder, so as to generate electromagnetic waves in the cylinder to heat an object to be treated, wherein the electromagnetic wave generating system comprises an electromagnetic wave generating module for generating electromagnetic wave signals and a heat radiating fan for radiating the electromagnetic wave generating module; and
a controller; configured to perform the control method described in any of the above.
Optionally, the electromagnetic wave generating system further includes:
the radiation antenna is arranged in the cylinder and is electrically connected with the electromagnetic wave generation module so as to radiate electromagnetic waves in the cylinder; and
and the bidirectional coupler is connected in series between the electromagnetic wave generation module and the radiation antenna and is configured to monitor the forward power signal and the reverse power signal.
Optionally, the cylinder defines a heating chamber for placing an object to be treated; and is also provided with
The electromagnetic wave generating module is arranged at the outer side of the heating chamber.
According to a third aspect of the present invention, there is provided a refrigeration and freezer comprising:
the box body is limited with at least one storage compartment; and
a heating unit according to any one of the above; wherein the method comprises the steps of
The cylinder body is arranged in one storage compartment, and the electromagnetic wave generating module is arranged on the outer side of the heat insulation layer of the box body.
Optionally, the refrigeration and freezing device further comprises:
a housing configured to house the electromagnetic wave generating module and the heat radiation fan; and
the partition board is arranged in the housing and is positioned at one side of the cooling fan away from the electromagnetic wave generating module so as to divide the space in the housing into an air inlet area and an air outlet area; wherein the method comprises the steps of
The radiating fan and the electromagnetic wave generating module are arranged in the air outlet area;
the air inlet area and the air outlet area are respectively provided with at least one air inlet and at least one air outlet in the circumferential direction of the cooling fan, and the position of the partition plate corresponding to the cooling fan is provided with at least one ventilation opening; and is also provided with
The airflow flowing directions from the at least one air inlet to the at least one air vent are perpendicular to the airflow flowing directions from the at least one air vent to each air outlet.
Optionally, the electromagnetic wave generating system further includes:
a power supply module configured to supply electric power to the electromagnetic wave generation module; wherein the method comprises the steps of
The power supply module is arranged in the air outlet area and is positioned at one side of the electromagnetic wave generation module, which is perpendicular to the airflow flowing direction from the at least one ventilation opening to each air outlet; and is also provided with
The power supply module is provided with a thermally conductive material arranged in thermal connection with the partition.
Compared with the rotation speed of the heat radiation fan which is adjusted according to the temperature of the electromagnetic wave generating module, the rotation speed of the heat radiation fan which is used for radiating the electromagnetic wave generating module is adjusted according to the power value of the forward power signal output by the electromagnetic wave generating module and the electromagnetic wave absorptivity of the object to be treated, the heat generated by the electromagnetic wave generating module can be reflected more accurately without arranging an additional temperature sensing device, the full heat radiation of the electromagnetic wave generating module is realized, meanwhile, the unexpected energy waste and noise pollution are avoided, and the user experience is improved.
Furthermore, the electromagnetic wave generating module is arranged on the outer side of the heat insulating layer of the box body, the housing is divided into the air inlet area and the air outlet area, the electromagnetic wave generating module and the cooling fan are arranged in the air outlet area, the airflow flowing direction from any one air inlet to the air vent is perpendicular to the airflow flowing direction from the air vent to each air outlet, the influence of heat generated by the electromagnetic wave generating system on the storage compartment of the box body is reduced, the storage quality of indoor food in the storage compartment is improved, the wind resistance of the cooling fan is reduced, the heat radiating efficiency is further improved, and the phenomena that water and dust enter the housing through the air inlet and the air outlet to make the electromagnetic wave generating module and the cooling fan wet and fall ash are avoided, so that potential safety hazards are avoided.
Furthermore, the power supply module is arranged on one side of the air outlet area, which is perpendicular to the airflow flowing direction from the at least one ventilation opening to each air outlet, of the electromagnetic wave generating module, and the heat conducting material is arranged to connect the partition board and the power supply module, so that the heat dissipation fan can respectively dissipate heat for the power supply module and the electromagnetic wave generating module in the process of sucking airflow and blowing airflow, the structure is more compact, the heat dissipation efficiency of the electromagnetic wave generating module and the power supply module is further improved on the whole, the heating efficiency of objects to be treated is ensured, and the service lives of the electromagnetic wave generating module and the power supply module are prolonged.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic exploded view of a refrigerated chiller according to one embodiment of the present invention;
FIG. 2 is a schematic block diagram of a heating unit according to one embodiment of the present invention;
FIG. 3 is a schematic block diagram of the controller of FIG. 2;
fig. 4 is a schematic structural view of the electromagnetic wave generation module of fig. 2;
FIG. 5 is a schematic partial cross-sectional view of the refrigeration and freezer of FIG. 1;
FIG. 6 is a schematic top view of the air outlet area of FIG. 5;
FIG. 7 is a schematic flow chart diagram of a control method for a heating unit according to one embodiment of the invention;
fig. 8 is a detailed flowchart of a control method for a heating unit according to one embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic exploded view of a refrigerated chiller 200 according to one embodiment of the present invention; fig. 2 is a schematic structural view of a heating unit 100 according to an embodiment of the present invention. Referring to fig. 1 and 2, the refrigerating and freezing apparatus 200 may include a cabinet 210 defining at least one storage compartment, at least one door for opening and closing the at least one storage compartment, a heating unit 100, and a controller. In the present invention, the refrigerating and freezing apparatus 200 may be an apparatus having a refrigerating or freezing function such as a refrigerator, a freezer, a sideboard, etc.
The case 210 may include a liner defining at least one storage compartment, an outer case, and a thermal insulation layer disposed between the liner and the outer case.
The heating unit 100 may include a cylinder 110, a door, and an electromagnetic wave generating system disposed in one storage compartment of the case 210.
Specifically, the barrel 110 may define a heating chamber for placing the object 170 to be treated, and a front wall thereof may be provided with a taking and placing opening for taking and placing the object 170 to be treated.
The door may be mounted with the barrel 110 by suitable means, such as a sliding rail connection, hinge, etc., for opening and closing the access opening.
The electromagnetic wave generating system may be at least partially disposed in the cylinder 110 or communicated into the cylinder 110 to generate electromagnetic waves in the cylinder 110 to heat the object 170 to be treated.
The cylinder 110 and the door may be provided with electromagnetic shielding features, respectively, to allow the door to be conductively connected to the cylinder 110 in the closed state to prevent electromagnetic leakage.
Fig. 3 is a schematic block diagram of the controller of fig. 2. Referring to fig. 3, the controller 140 may include a processing unit 141 and a storage unit 142. In which the storage unit 142 stores a computer program 143 for implementing the control method of the embodiment of the present invention when the computer program 143 is executed by the processing unit 141.
In some embodiments, the electromagnetic wave generation system may include an electromagnetic wave generation module 120, a power supply module 180, a radiating antenna 150, and a matching module 160.
The electromagnetic wave generation module 120 may be configured to generate an electromagnetic wave signal. Fig. 4 is a schematic structural view of the electromagnetic wave generation module 120 in fig. 2. Referring to fig. 4, in some embodiments, the electromagnetic wave generation module 120 may include a frequency source 121, a power amplifier 122, and a processing unit 123.
The power supply module 180 may be configured to be electrically connected to the electromagnetic wave generating module 120 to provide the electromagnetic wave generating module 120 with electric energy, so that the electromagnetic wave generating module 120 generates an electromagnetic wave signal.
The radiation antenna 150 may be disposed in the cylinder 110 and electrically connected to the electromagnetic wave generating module 120, so as to generate electromagnetic waves with corresponding frequencies according to the electromagnetic wave signals, and heat the object 170 to be processed in the cylinder 110.
The matching module 160 may be connected in series between the electromagnetic wave generating module 120 and the radiation antenna 150, and configured to adjust a load impedance of the electromagnetic wave generating module 120 by adjusting its own impedance, so as to achieve load matching and improve heating efficiency.
In some further embodiments, the cylinder 110 may be made of metal to act as a receiver pole for the radiating antenna 150. In this embodiment, the cartridge 110 itself is the electromagnetic shielding feature of the cartridge 110.
In still further embodiments, the electromagnetic wave generation system further includes a receiving plate disposed opposite the radiating antenna 150 and electrically connected to the electromagnetic wave generation module 120. In this embodiment, the inner wall of the cylinder 110 may be coated with a metal coating or attached with a metal mesh or the like as an electromagnetic shielding feature of the cylinder 110.
Fig. 5 is a schematic partial cross-sectional view of the refrigeration and freezer 200 shown in fig. 1. Referring to fig. 5, in particular, the heating unit 100 may further include at least one heat radiation fan 190 for radiating heat for the electromagnetic wave generating module 120 and the power supply module 180. According to the invention, the radiating fan 190 radiates heat for the electromagnetic wave generating module 120 and the power supply module 180 at the same time, so that not only can the electromagnetic wave generating module 120 and the power supply module 180 be efficiently cooled, but also the occupied space is reduced, and the storage space of the refrigerating and freezing device 200 is improved.
In the present invention, the number of the heat dissipation fans 190 may be one, two or more. To facilitate understanding of the present invention, the present invention will be described below taking the number of cooling fans 190 as one example.
In some embodiments, the refrigerating and freezing apparatus 200 may further include a heat dissipation fin 240 thermally connected with the electromagnetic wave generating module 120 to increase a heat dissipation area of the electromagnetic wave generating module 120, thereby increasing a heat dissipation efficiency of the electromagnetic wave generating module 120.
The heat dissipation fin 240 may include a plurality of ribs perpendicular to the electromagnetic wave generation module 120, i.e., each rib extends from the electromagnetic wave generation module 120 in a direction away from the electromagnetic wave generation module 120 and perpendicular to a mounting surface of the rib.
The heat dissipation fin 240 may further include a substrate integrally formed with a plurality of ribs for thermal connection with the electromagnetic wave generation module 120.
The heat dissipation fan 190 may be disposed on a side of the heat dissipation fin 240 away from the electromagnetic wave generating module 120 and configured to blow air flow toward the electromagnetic wave generating module 120, i.e. the electromagnetic wave generating module 120 is disposed downstream of the heat dissipation fan 190, so as to reduce wind resistance and improve heat dissipation efficiency of the electromagnetic wave generating module 120.
The extending direction of the plurality of ribs may be further arranged perpendicular to the direction in which the electromagnetic wave generating module 120 approaches the power supply module 180, so as to reduce the influence of the heat generated by the electromagnetic wave generating module 120 on the power supply module 180.
At least one rib thermally connected to the middle of the electromagnetic wave generation module 120 is provided with a receiving portion recessed in a direction approaching the electromagnetic wave generation module 120.
The heat dissipation fan 190 may be disposed at the accommodating portion, and a projection of the heat dissipation fan 190 in an extending direction perpendicular to the plurality of ribs is at least located in one rib, so as to further reduce an influence of heat on the power supply module 180 and further improve a heat dissipation efficiency of the electromagnetic wave generating module 120.
The heat radiation fan 190 may be provided to suck air flow through the power supply module 180 and to cause the air flow to be blown out toward the electromagnetic wave generation module 120, so that the heat radiation efficiency of the electromagnetic wave generation module 120 and the power supply module 180 is improved as a whole while improving the structural compactness.
The refrigerator-freezer 200 may also include a housing 220 and a partition. The housing 220 may be used to house the electromagnetic wave generating module 120, the power supplying module 180, and the heat dissipating fan 190.
The partition may be disposed in the casing 220 at a side of the heat radiation fan 190 away from the electromagnetic wave generating module 120 to divide the space in the casing 220 into an air inlet area and an air outlet area. The heat radiation fan 190 and the electromagnetic wave generation module 120 may be disposed at the air outlet region.
Fig. 6 is a schematic top view of the air outlet area of fig. 5. Referring to fig. 5 and 6, the air inlet area and the air outlet area are respectively provided with at least one air inlet 221 and at least one air outlet 222 in the circumferential direction of the cooling fan 190, and the position of the partition plate corresponding to the at least one cooling fan 190 is provided with at least one air vent 231, so as to avoid the phenomenon that water and dust enter the housing 220 through the air inlet 221 and the air outlet 222 to cause the electromagnetic wave generating module 120 and the power supply module 180 to be wetted and dust to fall, and avoid the occurrence of potential safety hazards.
The airflow flowing direction from the at least one air inlet 221 to the at least one air vent 231 is perpendicular to the airflow flowing direction from the at least one air vent 231 to each air outlet 222, so as to further reduce wind resistance and improve heat dissipation efficiency.
The power supply module 180 may be disposed in the air outlet area and located at one side of the electromagnetic wave generating module 120 perpendicular to the airflow flowing direction from the at least one ventilation opening 231 to each air outlet 222, so that the heat dissipation fan 190 dissipates heat for the power supply module 180 and the electromagnetic wave generating module 120 during the process of sucking and blowing the airflow, thereby further reducing the influence of heat on the power supply module 180 and improving the heat dissipation efficiency.
Further, the refrigerating and freezing apparatus 200 further includes a heat conductive material 250 thermally connected to the power supply module 180 and the partition plate to improve heat dissipation efficiency of the power supply module 180.
The electromagnetic wave generating module 120, the power supplying module 180, the heat dissipating fan 190 and the housing 220 may be disposed outside the heating chamber to reduce the influence of heat generated by the electromagnetic wave generating module 120 and the power supplying module 180 on the object 170 to be treated in the heating chamber. Further, the electromagnetic wave generating module 120 and the like may be provided outside the heat insulating layer of the case 210.
The heat radiation fan 190 may be disposed above the electromagnetic wave generating module 120, i.e., the electromagnetic wave generating module 120 may be disposed above the heat insulation layer to improve the stability of the electromagnetic wave generating module 120 and the heat radiation fan 190.
The processing unit 141 may be configured to obtain a forward power signal output by the electromagnetic wave generating module 120 and a reverse power signal returned to the electromagnetic wave generating module 120 when the electromagnetic wave generating module 120 is operated, calculate an electromagnetic wave absorption rate of the object 170 to be processed according to the forward power signal and the reverse power signal, and adjust a rotation speed of the cooling fan 190 according to a power value of the forward power signal (i.e., an output power of the electromagnetic wave generating module 120) and the electromagnetic wave absorption rate.
A bi-directional coupler 130 may be connected in series between the electromagnetic wave generating module 120 and the radiation antenna 150 to monitor the forward power signal output from the electromagnetic wave generating module 120 and the reverse power signal returned to the electromagnetic wave generating module 120.
Compared with the rotation speed of the heat radiation fan 190 for radiating the electromagnetic wave generating module 120 according to the temperature of the electromagnetic wave generating module 120, the heating unit 100 of the invention can more accurately reflect the heat generated by the electromagnetic wave generating module 120 without arranging an additional temperature sensing device, can realize the sufficient heat radiation of the electromagnetic wave generating module 120, simultaneously avoid the unexpected energy waste and noise pollution, and improve the user experience.
In some further embodiments, the processing unit 141 may be configured to match the rotational speed of the cooling fan 190 according to a preset rotational speed comparison relationship according to the power value of the forward power signal and the electromagnetic wave absorption rate. The rotation speed comparison relation records the power values in different ranges and the rotation speeds corresponding to the electromagnetic wave absorptivity in different ranges.
In the case where the power values of the forward power signals are the same, the rotation speed of the cooling fan 190 may be inversely related to the average value of the electromagnetic wave absorptance in different ranges; in the case that the electromagnetic wave absorption rate is the same, the rotation speed of the heat dissipating fan 190 may be positively correlated with the average value of the power values in different ranges, so as to efficiently and energy-effectively dissipate the heat of the electromagnetic wave generating module 120.
The rotation speed comparison relation can also be a formula recorded with different power values, electromagnetic wave absorptivity and rotation speed.
The processing unit 141 may be further configured to obtain the temperature of the processing unit 123 of the electromagnetic wave generating module 120 in real time when the electromagnetic wave generating module 120 is in operation, and control the frequency source 121 and the power amplifier 122 to stop operating when the temperature of the processing unit 123 is greater than or equal to a preset temperature threshold value, so as to ensure the service life of the processing unit 123.
The processing unit 141 may be further configured to control the cooling fan 190 to operate at the rated rotational speed for a first preset time to stop operation after the control frequency source 121 and the power amplifier 122 stop operation, so as to rapidly dissipate heat in the housing 220 to avoid heat accumulation.
Fig. 7 is a schematic flow chart of a control method for the heating unit 100 according to one embodiment of the present invention. Referring to fig. 7, the control method for the heating unit 100 performed by the controller 140 of any of the above-described embodiments of the present invention may include the steps of:
step S702: the forward power signal output by the electromagnetic wave generation module 120 and the reverse power signal returned to the electromagnetic wave generation module 120 are acquired.
Step S704: the electromagnetic wave absorptivity of the object 170 to be processed is calculated from the forward power signal and the reverse power signal.
Step S706: the rotation speed of the cooling fan 190 is adjusted according to the power value of the forward power signal and the electromagnetic wave absorptivity.
Compared with the control method of the invention, which adjusts the rotation speed of the heat radiation fan 190 radiating the electromagnetic wave generating module 120 according to the power value of the forward power signal output by the electromagnetic wave generating module 120 and the electromagnetic wave absorptivity of the object 170 to be treated, compared with the control method of the invention, which adjusts the rotation speed of the heat radiation fan 190 according to the temperature of the electromagnetic wave generating module 120, the control method can more accurately reflect the heat generated by the electromagnetic wave generating module 120 without arranging an additional temperature sensing device, thereby avoiding unexpected energy waste and noise pollution while realizing sufficient heat radiation of the electromagnetic wave generating module 120 and improving user experience.
Fig. 8 is a detailed flowchart of a control method for the heating unit 100 according to one embodiment of the present invention. Referring to fig. 8, the control method for the heating unit 100 of the present invention may include the steps of:
step S802: the temperature of the processing unit of the electromagnetic wave generation module 120 is acquired.
Step S804: it is determined whether the temperature of the processing unit 123 of the electromagnetic wave generation module 120 itself is equal to or higher than a preset temperature threshold. If yes, go to step S806; if not, go to step S808.
Step S806: the frequency source 121 and the power amplifier 122 are controlled to stop operating, and the heat radiation fan 190 is operated at a rated rotational speed for a first preset time and stops operating after the first preset time, so as to ensure the service life of the processing unit 123 and prevent heat from accumulating in the housing 220.
Step S808: the forward power signal output by the electromagnetic wave generation module 120 and the reverse power signal returned to the electromagnetic wave generation module 120 are acquired. In this step, the forward power signal and the reverse power signal may be monitored by the bi-directional coupler 130 connected in series between the electromagnetic wave generating module 120 and the radiation antenna 150. Step S810 is performed.
Step S810: the electromagnetic wave absorptivity of the object 170 to be processed is calculated from the forward power signal and the reverse power signal. Step S812 is performed.
Step S812: the rotation speed of the cooling fan 190 is matched according to a preset rotation speed comparison relation based on the power value of the forward power signal and the electromagnetic wave absorptivity. Wherein, in the case that the power values of the forward power signals are the same, the rotation speed of the cooling fan 190 may be inversely related to the average value of the electromagnetic wave absorptivity in different ranges; in the case that the electromagnetic wave absorption rate is the same, the rotation speed of the heat dissipating fan 190 may be positively correlated with the average value of the power values in different ranges, so as to efficiently and energy-effectively dissipate the heat of the electromagnetic wave generating module 120. Returning to step S802.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (8)
1. A refrigerated chiller comprising:
the box body is limited with at least one storage compartment; and
the heating unit comprises a cylinder body used for placing an object to be treated and an electromagnetic wave generating system at least a part of which is arranged in the cylinder body or communicated with the cylinder body; wherein,,
the electromagnetic wave generating system comprises an electromagnetic wave generating module for generating an electromagnetic wave signal, a power supply module for providing electric energy for the electromagnetic wave generating module, a heat radiation fan for radiating heat for the electromagnetic wave generating module, and a controller for executing a control method;
the cylinder body is arranged in one storage compartment, and the electromagnetic wave generating module is arranged at the outer side of the heat insulation layer of the box body;
the refrigerating and freezing device further comprises:
a housing configured to house the electromagnetic wave generating module and the heat radiation fan; and
the partition board is arranged in the housing and is positioned at one side of the cooling fan away from the electromagnetic wave generating module so as to divide the space in the housing into an air inlet area and an air outlet area; wherein,,
the radiating fan, the electromagnetic wave generating module and the power supply module are arranged in the air outlet area;
the air inlet area and the air outlet area are respectively provided with at least one air inlet and at least one air outlet in the circumferential direction of the cooling fan, and the position of the partition plate corresponding to the cooling fan is provided with at least one ventilation opening;
the airflow flowing directions from the at least one air inlet to the at least one air vent are perpendicular to the airflow flowing directions from the at least one air vent to each air outlet;
the power supply module is arranged on one side of the electromagnetic wave generation module, which is perpendicular to the airflow flowing direction from the at least one ventilation opening to each air outlet; and is also provided with
The power supply module is provided with a heat conducting material which is thermally connected with the partition board; and is also provided with
The control method comprises the following steps:
acquiring a forward power signal output by the electromagnetic wave generation module and a reverse power signal returned to the electromagnetic wave generation module;
calculating the electromagnetic wave absorptivity of the object to be processed according to the forward power signal and the reverse power signal;
and adjusting the rotating speed of the cooling fan according to the power value of the forward power signal and the electromagnetic wave absorptivity.
2. The refrigerating and freezing apparatus of claim 1, wherein the step of adjusting the rotation speed of the heat radiation fan according to the power value of the forward power signal and the electromagnetic wave absorption rate comprises:
matching the rotating speed of the cooling fan according to the power value of the forward power signal and the electromagnetic wave absorptivity and a preset rotating speed comparison relation; wherein the method comprises the steps of
The rotation speed comparison relation records power values in different ranges and rotation speeds corresponding to electromagnetic wave absorptivity in different ranges; and is also provided with
Under the condition that the power values of the forward power signals are the same, the rotating speed of the cooling fan is inversely related to the average value of the electromagnetic wave absorptivity in different ranges; when the electromagnetic wave absorptivity is the same, the rotation speed of the cooling fan is positively correlated with the average value of power values in different ranges.
3. The refrigeration and chiller of claim 1, wherein the electromagnetic wave generation module comprises a frequency source, a power amplifier, and a processing unit; the control method further includes:
acquiring the temperature of the processing unit;
and if the temperature of the processing unit is greater than or equal to a preset temperature threshold, controlling the frequency source and the power amplifier to stop working.
4. A refrigeration chiller as set forth in claim 3 wherein after said step of controlling said frequency source and power amplifier to cease operation further comprises:
and controlling the cooling fan to work at the rated rotation speed for a first preset time, and stopping working after the first preset time.
5. The refrigeration and chiller of claim 1, wherein the electromagnetic wave generation system further comprises:
the radiation antenna is arranged in the cylinder and is electrically connected with the electromagnetic wave generation module so as to radiate electromagnetic waves in the cylinder; and
and the bidirectional coupler is connected in series between the electromagnetic wave generation module and the radiation antenna and is configured to monitor the forward power signal and the reverse power signal.
6. The refrigeration and freezer of claim 1, further comprising:
the radiating fin comprises a plurality of rib plates perpendicular to the electromagnetic wave generating module and a substrate integrally manufactured with the plurality of rib plates; wherein,,
the substrate is disposed in thermal connection with the electromagnetic wave generation module.
7. The refrigerating and freezing apparatus according to claim 6, wherein,
the plurality of rib plates are provided with accommodating parts recessed towards the direction close to the electromagnetic wave generating module; and is also provided with
The cooling fan is arranged on the accommodating part.
8. The refrigerating and freezing apparatus according to claim 7, wherein,
the extending direction of the plurality of rib plates is perpendicular to the direction of the electromagnetic wave generating module approaching the power supply module; and/or
The projection of the cooling fan in the extending direction perpendicular to the rib plates is at least positioned in one rib plate.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010099918.1A CN113347750B (en) | 2020-02-18 | 2020-02-18 | Control method for heating unit, heating unit and refrigerating and freezing device |
| EP21757869.9A EP4098958B1 (en) | 2020-02-18 | 2021-02-09 | Control method for heating unit, and refrigerating and freezing apparatus |
| US17/800,594 US20230345591A1 (en) | 2020-02-18 | 2021-02-09 | Control method for heating unit, heating unit, and refrigerating and freezing apparatus |
| KR1020227027941A KR20220157940A (en) | 2020-02-18 | 2021-02-09 | Heating unit control method and heating unit and refrigerator/freezer |
| PCT/CN2021/076240 WO2021164648A1 (en) | 2020-02-18 | 2021-02-09 | Control method for heating unit, heating unit, and refrigerating and freezing apparatus |
| AU2021223034A AU2021223034B2 (en) | 2020-02-18 | 2021-02-09 | Control method for heating unit, heating unit, and refrigerating and freezing apparatus |
| JP2022547676A JP7406643B2 (en) | 2020-02-18 | 2021-02-09 | Heating unit control method, heating unit, and refrigeration/freezing equipment |
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| CN202010099918.1A CN113347750B (en) | 2020-02-18 | 2020-02-18 | Control method for heating unit, heating unit and refrigerating and freezing device |
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| CN118368757A (en) * | 2023-01-19 | 2024-07-19 | 青岛海尔电冰箱有限公司 | Control method for heating device and refrigerator with heating device |
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